摘要
为研究地应力状态对单侧隧道中爆炸平行双线隧道衬砌动力响应的影响,利用Dynain文件法进行地应力平衡,将生成的地应力平衡结果应用于后续爆炸问题数值模拟。采用Hypermesh及Ls-dyna建立三维耦合有限元模型,获得上覆30m围岩的隧道初始地应力状态,结果表明应用dynain文件法能够较为准确的进行地应力平衡.复现模型的初始地应力状态。可为同类工程数值模拟和设计提供有益借鉴。
To study the effect of ground stress state on the dynamic response of two-lane tunnel which subjected to unilateral accidental explosion, the Dynain method was used for ground stress equilibrium calculation. The generated ground stress equilibrium results were applied to the subsequent numerical simulation of the explosion problem,and a three-dimensional coupled finite element model was established by Hypermesh and Ls-dyna to obtain the initial ground stress state of the overlying 30m surrounding rock of the tunnel. The results showed that the application of DR method could accurately reproduce steady in-situ stress state in Ls-dyna, which could provide useful reference for related numerical simulation and design of similar projects.
作者
钱佳杰
QIAN Jiajie(College of Civil Engineering and Architecture,Zhejiang University,Hanghou 310058,China)
出处
《低温建筑技术》
2022年第6期96-99,共4页
Low Temperature Architecture Technology
